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Title: Fabrication of highly spin-polarized Co{sub 2}FeAl{sub 0.5}Si{sub 0.5} thin-films

Ferromagnetic Heusler Co{sub 2}FeAl{sub 0.5}Si{sub 0.5} epitaxial thin-films have been fabricated in the L2{sub 1} structure with saturation magnetizations over 1200 emu/cm{sup 3}. Andreev reflection measurements show that the spin polarization is as high as 80% in samples sputtered on unheated MgO (100) substrates and annealed at high temperatures. However, the spin polarization is considerably smaller in samples deposited on heated substrates.
Authors:
; ; ; ;  [1] ; ;  [2] ; ;  [3] ;  [4]
  1. School of Materials, Arizona State University, Tempe, Arizona 85287-8706 (United States)
  2. Department of Physics, Arizona State University, Tempe, Arizona 85287 (United States)
  3. SRI International, 301-64, Menlo Park, California 94025 (United States)
  4. The Biodesign Institute, Arizona State University, Tempe, Arizona 85287 (United States)
Publication Date:
OSTI Identifier:
22269537
Resource Type:
Journal Article
Resource Relation:
Journal Name: APL Materials; Journal Volume: 2; Journal Issue: 4; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ANNEALING; DEPOSITS; EPITAXY; FABRICATION; MAGNESIUM OXIDES; MAGNETIZATION; SATURATION; SPIN ORIENTATION; SPUTTERING; SUBSTRATES; TEMPERATURE RANGE 0400-1000 K; THIN FILMS